linux-kernel - Re: [RFC 1/2] cma: remove __reclaim

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Message-ID: <502BEF53.80200@redhat.com>
Date:	Wed, 15 Aug 2012 14:49:55 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Minchan Kim <minchan@...nel.org>
CC:	Marek Szyprowski <m.szyprowski@...sung.com>,
	Mel Gorman <mgorman@...e.de>,
	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [RFC 1/2] cma: remove __reclaim_pages

On 08/14/2012 04:57 AM, Minchan Kim wrote:
> Now cma reclaims too many pages by __reclaim_pages which says
> following as
>
>          * Reclaim enough pages to make sure that contiguous allocation
>          * will not starve the system.
>
> Starve? What does it starve the system? The function which allocate
> free page for migration target would wake up kswapd and do direct reclaim
> if needed during migration so system doesn't starve.
>
> Let remove __reclaim_pages and related function and fields.

Fair enough.

> Signed-off-by: Minchan Kim <minchan@...nel.org>

Acked-by: Rik van Riel <riel@...hat.com>
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